Since commercial 70V amplifiers are so versatile, there are many modules and accessories to modify and extend the capabilities of an amplifier. Optional microphone and line inputs, sound masking modules, tone generator inputs, pole mounts, and rack mounts are only a few examples of the modules and accessories that can be used to customize an amplifier. ProAudio.com offers a great selection of these products to get the most out of your 70V Amplifier.